Which manwha are you talking about?
Inferno or Freezing? ... wow, way to be subtle on the names for his works. XD
Spoiler for For AflameINFERNO:
I actually think this could make a very good game. Make it DMC/Ninja Gaiden style - Gathering Invento Hells as MP for the Invento Spells and Hellgana Spells as well. Making the Spells 'combo'able would be a definite plus as well. 1st character of course will be Kang ShiChan/Inferno and 2nd playable would be Gehenna. Two story arcs heading towards a joint conclusion.
Unlockables include: Different costumes, exclusive arts & conceptuals, 2-player modes, Vs Mode, stuff like that.
If I knew they would actually pay attention, I'd write in all the details and send it over there to be read and all...